Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

75°F

24°C

Humidity 39%
Wind Speed N 8 mph
Barometer 30.21 in (1022.8 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 4 Oct 11:53 am CDT
Extended Forecast for

Caseyville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. North wind 6 to 8 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 54. North wind 5 to 7 mph.

    Low: 54 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 77. Northeast wind 3 to 6 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 50. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 50 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Calm wind becoming south around 6 mph in the morning.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. North wind 6 to 8 mph.
Tonight
Clear, with a low around 54. North wind 5 to 7 mph.
Monday
Sunny, with a high near 77. Northeast wind 3 to 6 mph.
Monday Night
Clear, with a low around 50. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 79. Calm wind becoming south around 6 mph in the morning.
Tuesday Night
Clear, with a low around 57.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Clear, with a low around 56.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 59.
Saturday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Caseyville IL
 38.64°N 90.03°W (Elev. 446 ft)
10:41 am CDT Oct 4, 2026
12pm CDT Oct 4, 2026-6pm CDT Oct 10, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database